Sand consolidation methods

Details Sand consolidation methods Sand consolidation methods

E - Fixed Constructions

21

B

166/17

E21B 43/24 (2006.01)

Patent

CA 1307458

SAND CONSOLIDATION METHODS (D# 79,016-F) ABSTRACT OF THE DISCLOSURE Methods are provided for selectively consolidating naturally occurring mineral grains such as sand within a subterranean formation to form a fluid permeable barrier which restrains the movement of sand particles when oil passes through the barrier. A fluid comprising a polymerizable monomer such as furfuryl alcohol and as a diluent, a polar organic solvent such as methanol and a strong, non-volatile acid catalyst such as sulfuric acid is provided, mixed with steam to form a multiphase or aerosol treating fluid, and injected into the formation to be consolidated. The well is shut in for sufficient period of time for polymerization to convert the injected fluids into a permeable barrier around the wellbore.

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